analyze-docker-runtime-errors

Installation
SKILL.md

Docker Runtime Error Analysis

Analyze running PHP containers for runtime failures and provide targeted diagnosis and fixes.

Runtime Error Categories

Error Symptom Root Cause
502 Bad Gateway Nginx returns 502 PHP-FPM not running or crashed
OOM Killed Container restarts memory_limit or container limit exceeded
Connection refused Service unreachable Container not ready or wrong network
Permission denied File operation fails UID/GID mismatch or read-only fs
Segmentation fault Process crashes Extension bug or memory corruption
Slow requests Timeouts, 504 errors PHP-FPM pool exhaustion

Detection Patterns

1. 502 Bad Gateway (PHP-FPM Not Running)

Related skills
Installs
4
GitHub Stars
71
First Seen
Mar 17, 2026